Table 2. AIC values for each model fitted for bacterial and archaeal trait evolution.

The AIC values for the best model and models that are not significantly inferior (AIC change < 2) in each trait are in bold.

Domain	Trait	BM	VRG	PE1	PE1 + BM	PE2	PE2 + BM	PE3
Bacteria	rRNA GC%	−38,431	−41,519	−40,747	−41,171	−41,591	−41,589	−41,587
	Genomic GC%	−28,539	−30,432	−30,921	−31,171	−31,299	−31,297	−31,295
	Genome size	−15,572	−15,990	−15,929	−16,022	−16,075	−16,090	−16,107
	N-ARSC	−41,944	−42,092	−42,123	−42,214	−42,214	−42,218	−42,217
Archaea	rRNA GC%	−483	−601	−606	−636	−642	−640	−638
	Genomic GC%	−440	−469	−488	−503	−504	−502	−500
	Genome size	−348	−351	−359	−357	−355	−353	−351
	N-ARSC	−1202	−1205	−1212	−1211	−1210	−1208	−1206